ADS-B error estimation and correction in the PHOENIX tracker

ADS-B, while acclaimed as a very accurate source of airplane positions, currently shows practical inaccuracies that can only by explained by the lack of GPS data. There is evidence that indicates that, in many cases, inertial navigation data is transmitted instead. This paper explains the algorithm based on multiradar tracking data to compensate the offsets within the PHOENIX tracker, which allows the use of the high relative accuracy and update rate of the ADS-B position data for tracking.